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ENMET Corporation PGD3-IR

2 C

ERTIFICATION

ATA

The Portable Gas Detector type PGD3-IR is Baseefa ATEX certified for use in Class 1, Div 1, Groups A, B, C, D potentially explosive

atmospheres under the following certificate number: -

Certificate No. Baseefa 03ATEX0235X

The infrared sensors fitted to the PGD3-IR are ‘EEx d’ certified and must only be replaced with sensors labelled with the following

details:-

Certificate No. SIRA 04ATEX1357U

I M2 EEx d I II 2 G EEx d IIC

3 D

EFINITIONS AND

BBREVIATIONS

Aspirator

A hand operated pump attachment which enables gas to be drawn into the instrument.

EXP

Explosive Gas.

Infrared

Sensor technology used to detect flammable gases and carbon dioxide. These

sensors are immune to chemical ‘poisoning’. Note that Infrared sensors cannot be

used to detect hydrogen.

LEL

Lower Explosive Limit, the volume ratio of flammable gas or vapour in air below which

an explosive gas atmosphere will not be formed.

%LEL

The percentage of the Lower Explosive Limit

e.g. the LEL for methane is 5% volume in air, therefore 20% LEL is equivalent to 1%

volume in air

(i.e. 20% of 5% volume)

TWA(LTEL)

Time-Weighted-Average, taken over an 8 hour reference period. Also referenced as

LTEL, Long Term Exposure Limit.

PPM

Parts per million.

STEL

Short Term Exposure Limit, the average exposure over a 15 minute sampling period.

Response Time

The time taken to reach 90% of the true value

4 PGD3-IR

EATURES AT A

LANCE

♦ Monitoring of up to 4 gases

♦ Can house up to 2 infrared sensors in the same instrument

♦ Pumped versions available

♦ Robust construction - high impact resistance

♦ Monitoring (STEL and TWA[LTEL])

♦ Peak readings facility for pre - entry testing

♦ Displays in scientific units

♦ Factory set alarm levels for each sensor

♦ Audible and visual alarms

♦ Sensor zero function

♦ Serial number and calibration due dates stored within instrument

♦ Display contrast adjustable via instrument menu

♦ Display backlighting

♦ Power and Fault indicators

♦ Low battery alarm

♦ Accessories to provide aspiration

♦ Protective rubber case and body harness

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